摘要：Herein, the Co
3O
4/NiCo
2O
4 nanocomposite has been prepared as a novel electrochemical sensor to accurately detect hydrogen peroxide (H
2O
2) and glucose. ZIF-67 is a metal-organic framework (MOF) with Co as the center metal ion. Co
3O
4 can be obtained by calcination of ZIF-67 at 700 °C, which can retain the structure of ZIF-67. The hollow Co
3O
4 nanocrystal was synthesized based on a calcination process of ZIF-67. This open structure can promote the whole Co
3O
4/NiCo
2O
4 nanocomposite larger accessible surface area and reactive sites. Co
3O
4 has good electrocatalytic performance, which has been applied in many fields. Moreover, H
2O
2 and dopamine sensing tests indicate that the as-prepared non-enzymatic electrochemical biosensor has good detection properties. The testing results indicate the as-prepared biosensor has a wide detection range, low detection limit, high selectivity, and long-term stability. These testing results suggest the potential application in food security, biomedicine, environmental detection, and pharmaceutical analysis.
